DataContractを使って、XMLファイルをクラスに変換

XMLファイルの読み込み→クラスの作成を楽にできる方法があったのでメモ

1 XML定義ファイルを用意する

2 XML定義にあった形でクラスを宣言

3 XMLを読み込んでクラスへと変換

XML

<?xml version="1.0" encoding="utf-8" ?>

<SiteList xmlns="http://schemas.datacontract.org/2004/07/XmlDataContractTest" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">

  <WebSite>

    <Name>ヤフージャパン</Name>

    <URL>http://www.yahoo.co.jp

    <UserID>yahooUser</UserID>

    <Pass>hogehoge</Pass>

    <Biko>yahoo</Biko>

  </WebSite>

  <WebSite>

    <Name>Google</Name>

    <URL>http://www.google.co.jp

    <UserID>googleUser</UserID>

    <Pass>hogehoge</Pass>

    <Biko>Google</Biko>

  </WebSite>

</SiteList>

XML定義用のクラス

    [CollectionDataContract(Name = "SiteList")]

    public class SiteList : List

    {

    }


    [DataContract(Name = "WebSite")]

    public class Site

    {

        [DataMember(Name = "Name", Order=1)]

        public string Name;

        [DataMember(Name = "URL", Order = 2)]

        public string Url;

        [DataMember(Name = "UserID", Order = 3)]

        public string UserId;

        [DataMember(Name = "Pass", Order = 4)]

        public string Pass;

        [DataMember(Name = "Biko", Order = 5)]

        public string Biko;

    }

XMLの読み込み→クラス化

    using (System.Xml.XmlReader reader = System.Xml.XmlReader.Create("WebSite.xml"))

    {
        DataContractSerializer ds = new DataContractSerializer(typeof(SiteList));
        SiteList sites= (SiteList)ds.ReadObject(reader, true);
        string outPut = "";
        foreach (Site s in sites)

        {

            outPut += s.Name + System.Environment.NewLine;

            outPut += s.Url + System.Environment.NewLine;

            outPut += s.UserId + System.Environment.NewLine;

            outPut += s.Pass + System.Environment.NewLine;

            outPut += s.Biko + System.Environment.NewLine;
            outPut += System.Environment.NewLine;

        }
        MessageBox.Show(outPut);

    }

クラス→XML書き込みの場合

    Site yahoo = new Site { Name = "yahoo!", Url = "http://www.yahoo.co.jp", UserId = "yahooUser", Pass = "hogehoge", Biko = "ヤフーです。" };

    Site google = new Site { Name = "Google", Url = "http://www.google.co.jp", UserId = "googleUser", Pass = "hogehoge", Biko = "グーグルです。" };
    SiteList sites = new SiteList();

    sites.Add(yahoo);

    sites.Add(google);
    DataContractSerializer ds = new DataContractSerializer(typeof(SiteList));
    using (Stream s = File.Create("WebSite.xml"))

    {

        ds.WriteObject(s, sites);

    }
    MessageBox.Show("正常終了");